ZW32-40.5/1250A type outdoor high voltage vacuum circuit breaker is the three-phase AC 50Hz, suitable for the rated voltage of 40.5kV outdoor high-voltage switchgear, which comply with the national standard GB1984 "high voltage AC circuit breakers" and professional standards JB3855 "3.6 ~ 40.5kV outdoor AC high voltage vacuum circuit breakers" and related IEC standards.